GMNA GM2202M PDF

1 SCOPE.

This specification covers the requirements for six types of waterproof, kraft lined, semi-rigid board. The board has a solid core construction of kraft and mixed fibers. All constructions, with the exception of Type 5, have laminated to each side of the core a 0.025 mm min film of polyethylene. The polyethylene is laminated to a kraft liner 0.052 mm thick. The kraft liner forms the outer faces of the complete board.